Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 fe1c866912aa4540…

MALICIOUS

RTF / .DOC

307.1 KB First seen: 2023-02-01
MD5: 0381298bb37de8df6b6e65d33b182a31 SHA-1: d84c0f74b1d52e4832ee4dab227cbc91acad563d SHA-256: fe1c866912aa45407548c1321068b8e65b78536349db5794543611c8e385a276
60 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The RTF document contains embedded OLE object data, and a heuristic indicates that \objupdate forces OLE activation. This suggests the document is designed to exploit OLE object handling to execute arbitrary code. The specific nature of the embedded object is not detailed, but the activation mechanism points to a malicious payload delivery.

Heuristics 2

  • \objupdate forces OLE activation high RTF_OBJUPDATE
    RTF contains \objupdate — forces automatic OLE object instantiation when the document is opened, bypassing user interaction. Almost exclusively seen in Equation Editor exploit documents.
  • OLE object data medium RTF_OBJDATA
    RTF contains 1 \objdata section(s) — embedded OLE objects

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off00000071.bin
4fcca181b74696555fe3478340944b68ce7f39babf075d910b484114a6aa2071
rtf-objdata-decoded RTF \objdata at offset 0x71 94608 bytes